John Chang Luk, M.D.
Pediatrics Physician · Austin, TX
John Chang Luk, M.D. is a pediatrics physician with a practice address in Austin, Texas, and NPI 1154360790, issued on Jun 6, 2006. Check the license (Texas L2434, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- John Chang Luk
- Credential
- M.D.
- Primary taxonomy
- Pediatrics Physician 208000000X
- License number
- L2434 TX
Self-reported in NPPES; status is on the state search - Practice location
- 313 E 12TH St, Austin, TX 78701
- Phone
- (409) 772-2222
- Enumerated
- Jun 6, 2006
- Record last updated
- Jul 13, 2026
- Fax
- (409) 772-0885
- Entity
- Type 1 · individual
8 nearest pediatrics physician records → All 5,641 in Texas → Look up another NPI →
Also registered at 313 E 12TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify John Chang Luk in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license L2434Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 71 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
John Chang Luk among 5,641 pediatrics physician records in Texas
John Chang Luk, M.D. is one of 5,641 pediatrics physician records with a practice address in Texas. 47% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 11% of them.
- NPI issued2006 · 11% of these records are older, 57% newer
- In a Medicare fileYes · 47% of these records are
- In the CMS Doctors and Clinicians fileNo · 9% of these records are
- Record last updated2026 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208000000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
469 pediatrics physician records list a practice address in Austin
They are 469 of the 26,585 NPPES records with a practice address in Austin, and 5,641 pediatrics physician records in Texas.
All 5,641 in Texas → Every provider in Austin → Pediatrics Physician nationwide →
The 8 pediatrics physician records with the nearest ZIP codes
- Marilyn Doyle, M.D.Austin, TX 787011215980032
- George Edwards, MDAustin, TX 787011134154404
- Marion Forbes, M.D.Austin, TX 787011275587511
- Michelle Gallas, DOAustin, TX 787011912005844
- Richard Holt, M.D.Austin, TX 787011689712515
- Anthony Kimbrough, MDAustin, TX 787011760436653
- Chelsea Knight, PNPAustin, TX 787011407792146
- Julio Pena, MDAustin, TX 787011992124069
Common questions
What is John Chang Luk, M.D.'s NPI number?
John Chang Luk, M.D.'s National Provider Identifier (NPI) is 1154360790, issued on Jun 6, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Chang Luk, M.D. located?
The NPPES record lists a practice address at 313 E 12TH St, Austin, TX, 78701. Phone: (409) 772-2222. Providers update this record themselves, so call before visiting.
How can I verify John Chang Luk, M.D.'s license?
NPPES lists Texas license number L2434, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
What is John Chang Luk, M.D.'s MIPS final score?
The 2023 MIPS final score is 71 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.